/* we don't want to include this stuff if we are inside of
an external regex engine based on the core one - like re 'debug'*/
-#include "utf8.h"
+# include "utf8.h"
+
+typedef SSize_t regnode_offset;
+
+struct regnode_meta {
+ U8 type;
+ U8 arg_len;
+ U8 arg_len_varies;
+ U8 off_by_arg;
+};
+
+/* this ensures that on alignment sensitive platforms
+ * this struct is aligned on 32 bit boundaries */
+union regnode_head {
+ struct {
+ union {
+ U8 flags;
+ U8 str_len_u8;
+ U8 first_byte;
+ } u_8;
+ U8 type;
+ U16 next_off;
+ } data;
+ U32 data_u32;
+};
struct regnode {
- U8 flags;
- U8 type;
- U16 next_off;
+ union regnode_head head;
};
typedef struct regnode regnode;
struct reg_substr_datum {
SSize_t min_offset; /* min pos (in chars) that substr must appear */
- SSize_t max_offset /* max pos (in chars) that substr must appear */;
+ SSize_t max_offset; /* max pos (in chars) that substr must appear */
SV *substr; /* non-utf8 variant */
SV *utf8_substr; /* utf8 variant */
SSize_t end_shift; /* how many fixed chars must end the string */
struct reg_substr_datum data[3]; /* Actual array */
};
-#ifdef PERL_ANY_COW
-#define SV_SAVED_COPY SV *saved_copy; /* If non-NULL, SV which is COW from original */
-#else
-#define SV_SAVED_COPY
-#endif
-
-/* offsets within a string of a particular /(.)/ capture */
+# ifdef PERL_ANY_COW
+# define SV_SAVED_COPY SV *saved_copy; /* If non-NULL, SV which is COW from original */
+# else
+# define SV_SAVED_COPY
+# endif
+/* offsets within a string of a particular /(.)/ capture
+ * if you change this by adding new non-temporary fields
+ * then be sure to update Perl_rxres_save() in pp_ctl.c */
typedef struct regexp_paren_pair {
SSize_t start;
SSize_t end;
+
/* 'start_tmp' records a new opening position before the matching end
* has been found, so that the old start and end values are still
* valid, e.g.
SSize_t start_tmp;
} regexp_paren_pair;
-#if defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_UTF8_C)
-#define _invlist_union(a, b, output) _invlist_union_maybe_complement_2nd(a, b, FALSE, output)
-#define _invlist_intersection(a, b, output) _invlist_intersection_maybe_complement_2nd(a, b, FALSE, output)
+# if defined(PERL_IN_REGCOMP_ANY) || defined(PERL_IN_UTF8_C)
+# define _invlist_union(a, b, output) _invlist_union_maybe_complement_2nd(a, b, FALSE, output)
+# define _invlist_intersection(a, b, output) _invlist_intersection_maybe_complement_2nd(a, b, FALSE, output)
/* Subtracting b from a leaves in a everything that was there that isn't in b,
* that is the intersection of a with b's complement */
-#define _invlist_subtract(a, b, output) _invlist_intersection_maybe_complement_2nd(a, b, TRUE, output)
-#endif
+# define _invlist_subtract(a, b, output) _invlist_intersection_maybe_complement_2nd(a, b, TRUE, output)
+# endif
/* record the position of a (?{...}) within a pattern */
REGEXP *src_regex;
};
+/* array of reg_code_block's plus header info */
+
+struct reg_code_blocks {
+ int refcnt; /* we may be pointed to from a regex and from the savestack */
+ int count; /* how many code blocks */
+ struct reg_code_block *cb; /* array of reg_code_block's */
+};
+
/*
+= for apidoc AyT||regexp
The regexp/REGEXP struct, see L<perlreapi> for further documentation
on the individual fields. The struct is ordered so that the most
commonly used fields are placed at the start.
regexp's data array based on the data item's type.
*/
-#define _REGEXP_COMMON \
- /* what engine created this regexp? */ \
- const struct regexp_engine* engine; \
- REGEXP *mother_re; /* what re is this a lightweight copy of? */ \
- HV *paren_names; /* Optional hash of paren names */ \
- /* Information about the match that the perl core uses to */ \
- /* manage things */ \
- U32 extflags; /* Flags used both externally and internally */ \
- SSize_t minlen; /* mininum possible number of chars in string to match */\
- SSize_t minlenret; /* mininum possible number of chars in $& */ \
- STRLEN gofs; /* chars left of pos that we search from */ \
- /* substring data about strings that must appear in the */ \
- /* final match, used for optimisations */ \
- struct reg_substr_data *substrs; \
- U32 nparens; /* number of capture buffers */ \
- /* private engine specific data */ \
- U32 intflags; /* Engine Specific Internal flags */ \
- void *pprivate; /* Data private to the regex engine which */ \
- /* created this object. */ \
- /* Data about the last/current match. These are modified */ \
- /* during matching */ \
- U32 lastparen; /* last open paren matched */ \
- U32 lastcloseparen; /* last close paren matched */ \
- /* Array of offsets for (@-) and (@+) */ \
- regexp_paren_pair *offs; \
- /* saved or original string so \digit works forever. */ \
- char *subbeg; \
- SV_SAVED_COPY /* If non-NULL, SV which is COW from original */\
- SSize_t sublen; /* Length of string pointed by subbeg */ \
- SSize_t suboffset; /* byte offset of subbeg from logical start of str */ \
- SSize_t subcoffset; /* suboffset equiv, but in chars (for @-/@+) */ \
- /* Information about the match that isn't often used */ \
- SSize_t maxlen; /* mininum possible number of chars in string to match */\
- /* offset from wrapped to the start of precomp */ \
- PERL_BITFIELD32 pre_prefix:4; \
- /* original flags used to compile the pattern, may differ */ \
- /* from extflags in various ways */ \
- PERL_BITFIELD32 compflags:9; \
- CV *qr_anoncv /* the anon sub wrapped round qr/(?{..})/ */
-
+/* NOTE: There is a copy of this struct in the documentation in perlreapi.pod
+ * if you make ANY changes please make sure they are ALSO made there.
+ */
typedef struct regexp {
- _XPV_HEAD;
- _REGEXP_COMMON;
+ /*----------------------------------------------------------------------
+ * Fields required for compatibility with SV types
+ */
+ _XPV_HEAD;
+
+ /*----------------------------------------------------------------------
+ * Operational fields
+ */
+
+ const struct regexp_engine* engine; /* what engine created this regexp? */
+ REGEXP *mother_re; /* what re is this a lightweight copy of? */
+ HV *paren_names; /* Optional hash of paren names */
+
+ /*----------------------------------------------------------------------
+ * Information about the match that the perl core uses to manage things
+ */
+
+ /* see comment in regcomp_internal.h about branch reset to understand
+ the distinction between physical and logical capture buffers */
+ U32 nparens; /* physical number of capture buffers */
+ U32 logical_nparens; /* logical_number of capture buffers */
+ I32 *logical_to_parno; /* map logical parno to first physcial */
+ I32 *parno_to_logical; /* map every physical parno to logical */
+ I32 *parno_to_logical_next; /* map every physical parno to the next
+ physical with the same logical id */
+
+ SSize_t maxlen; /* maximum possible number of chars in string to match */
+ SSize_t minlen; /* minimum possible number of chars in string to match */
+ SSize_t minlenret; /* minimum possible number of chars in $& */
+ STRLEN gofs; /* chars left of pos that we search from */
+ /* substring data about strings that must appear in
+ * the final match, used for optimisations */
+
+ struct reg_substr_data *substrs;
+
+ /* private engine specific data */
+
+ void *pprivate; /* Data private to the regex engine which
+ * created this object. */
+
+ U32 extflags; /* Flags used both externally and internally */
+ U32 intflags; /* Engine Specific Internal flags */
+
+ /*----------------------------------------------------------------------
+ * Data about the last/current match. These are modified during matching
+ */
+
+ U32 lastparen; /* highest close paren matched ($+) */
+ U32 lastcloseparen; /* last close paren matched ($^N) */
+ regexp_paren_pair *offs; /* Array of offsets for (@-) and (@+) */
+ char **recurse_locinput; /* used to detect infinite recursion, XXX: move to internal */
+
+ /*---------------------------------------------------------------------- */
+
+ /* offset from wrapped to the start of precomp */
+ PERL_BITFIELD32 pre_prefix:4;
+
+ /* original flags used to compile the pattern, may differ from
+ * extflags in various ways */
+ PERL_BITFIELD32 compflags:9;
+
+ /*---------------------------------------------------------------------- */
+
+ char *subbeg; /* saved or original string so \digit works forever. */
+ SV_SAVED_COPY /* If non-NULL, SV which is COW from original */
+ SSize_t sublen; /* Length of string pointed by subbeg */
+ SSize_t suboffset; /* byte offset of subbeg from logical start of str */
+ SSize_t subcoffset; /* suboffset equiv, but in chars (for @-/@+) */
+
+ /*----------------------------------------------------------------------
+ * More Operational fields
+ */
+
+ CV *qr_anoncv; /* the anon sub wrapped round qr/(?{..})/ */
} regexp;
-#define RXp_PAREN_NAMES(rx) ((rx)->paren_names)
+
+#define RXp_PAREN_NAMES(rx) ((rx)->paren_names)
+
+#define RXp_OFFS_START(rx,n) \
+ RXp_OFFSp(rx)[(n)].start
+
+#define RXp_OFFS_END(rx,n) \
+ RXp_OFFSp(rx)[(n)].end
+
+#define RXp_OFFS_VALID(rx,n) \
+ (RXp_OFFSp(rx)[(n)].end != -1 && RXp_OFFSp(rx)[(n)].start != -1 )
+
+
+#define RX_OFFS_START(rx_sv,n) RXp_OFFS_START(ReANY(rx_sv),n)
+#define RX_OFFS_END(rx_sv,n) RXp_OFFS_END(ReANY(rx_sv),n)
+#define RX_OFFS_VALID(rx_sv,n) RXp_OFFS_VALID(ReANY(rx_sv),n)
+
+/*
+
+=for apidoc mh||RX_OFFSp|const REGEXP * rx_sv
+Returns the RX_OFFS structure as a pointer. This should NOT be used
+directly, and the structure it returns may change in future versions of
+perl. Use one of the other RX_OFFS_xxx macros instead, which should be
+stable as Perl evolves. The 'p' suffix on the macro is meant to indicate
+both that the macro is "private" to the internals, and that it returns
+a pointer.
+
+=for apidoc Amh||RX_OFFS_START|const REGEXP * rx_sv|U32 n
+Returns the start offset of the C<n>'th capture buffer, when
+C<n> is 0 it refers to the overall match as a whole. A value of
+-1 is returned if the C<n>'th capture buffer did not match.
+
+=for apidoc Amh||RXp_OFFS_START|const regexp * rx|U32 n
+Same as RX_OFFS_START() but operates on a C<struct regexp *> instead of
+an C<SV *>.
+
+=for apidoc Amh||RX_OFFS_END|const REGEXP * rx_sv|U32 n
+Returns the end offset of the C<n>'th capture buffer, when C<n> is 0 it
+refers to the overall match as a whole. A value of
+-1 is returned if the C<n>'th capture buffer did not match.
+
+=for apidoc Amh||RXp_OFFS_END|const regexp * rx|U32 n
+Same as RX_OFFS_END() but operates on a C<struct regexp *> instead of
+an C<SV *>.
+
+=for apidoc Amh||RX_OFFS_VALID|const REGEXP * rx_sv|U32 n
+Returns true if the C<n>'th offset buffer matched, false otherwise, when
+C<n> is 0 it refers to the overall match as a whole which should always
+return true.
+
+=for apidoc Amh||RXp_OFFS_VALID|const regexp * rx|U32 n
+Same as RX_OFFS_VLAID() but operates on a C<struct regexp *> instead of
+an C<SV *>.
+
+=cut
+
+*/
/* used for high speed searches */
typedef struct re_scream_pos_data_s
const U32 flags,
re_scream_pos_data *data);
SV* (*checkstr) (pTHX_ REGEXP * const rx);
- void (*free) (pTHX_ REGEXP * const rx);
+ void (*rxfree) (pTHX_ REGEXP * const rx);
void (*numbered_buff_FETCH) (pTHX_ REGEXP * const rx, const I32 paren,
SV * const sv);
void (*numbered_buff_STORE) (pTHX_ REGEXP * const rx, const I32 paren,
SV* (*named_buff_iter) (pTHX_ REGEXP * const rx, const SV * const lastkey,
const U32 flags);
SV* (*qr_package)(pTHX_ REGEXP * const rx);
-#ifdef USE_ITHREADS
+# ifdef USE_ITHREADS
void* (*dupe) (pTHX_ REGEXP * const rx, CLONE_PARAMS *param);
-#endif
+# endif
REGEXP* (*op_comp) (pTHX_ SV ** const patternp, int pat_count,
- OP *expr, const struct regexp_engine* eng,
- REGEXP *VOL old_re,
- bool *is_bare_re, U32 orig_rx_flags, U32 pm_flags);
+ OP *expr, const struct regexp_engine* eng,
+ REGEXP *old_re,
+ bool *is_bare_re, U32 orig_rx_flags, U32 pm_flags);
} regexp_engine;
/*
paren name. >= 1 is reserved for actual numbered captures, i.e. $1,
$2 etc.
*/
-#define RX_BUFF_IDX_CARET_PREMATCH -5 /* ${^PREMATCH} */
-#define RX_BUFF_IDX_CARET_POSTMATCH -4 /* ${^POSTMATCH} */
-#define RX_BUFF_IDX_CARET_FULLMATCH -3 /* ${^MATCH} */
-#define RX_BUFF_IDX_PREMATCH -2 /* $` */
-#define RX_BUFF_IDX_POSTMATCH -1 /* $' */
-#define RX_BUFF_IDX_FULLMATCH 0 /* $& */
+# define RX_BUFF_IDX_CARET_PREMATCH -5 /* ${^PREMATCH} */
+# define RX_BUFF_IDX_CARET_POSTMATCH -4 /* ${^POSTMATCH} */
+# define RX_BUFF_IDX_CARET_FULLMATCH -3 /* ${^MATCH} */
+# define RX_BUFF_IDX_PREMATCH -2 /* $` */
+# define RX_BUFF_IDX_POSTMATCH -1 /* $' */
+# define RX_BUFF_IDX_FULLMATCH 0 /* $& */
/*
Flags that are passed to the named_buff and named_buff_iter
*/
/* The Tie::Hash::NamedCapture operation this is part of, if any */
-#define RXapif_FETCH 0x0001
-#define RXapif_STORE 0x0002
-#define RXapif_DELETE 0x0004
-#define RXapif_CLEAR 0x0008
-#define RXapif_EXISTS 0x0010
-#define RXapif_SCALAR 0x0020
-#define RXapif_FIRSTKEY 0x0040
-#define RXapif_NEXTKEY 0x0080
+# define RXapif_FETCH 0x0001
+# define RXapif_STORE 0x0002
+# define RXapif_DELETE 0x0004
+# define RXapif_CLEAR 0x0008
+# define RXapif_EXISTS 0x0010
+# define RXapif_SCALAR 0x0020
+# define RXapif_FIRSTKEY 0x0040
+# define RXapif_NEXTKEY 0x0080
/* Whether %+ or %- is being operated on */
-#define RXapif_ONE 0x0100 /* %+ */
-#define RXapif_ALL 0x0200 /* %- */
+# define RXapif_ONE 0x0100 /* %+ */
+# define RXapif_ALL 0x0200 /* %- */
/* Whether this is being called from a re:: function */
-#define RXapif_REGNAME 0x0400
-#define RXapif_REGNAMES 0x0800
-#define RXapif_REGNAMES_COUNT 0x1000
+# define RXapif_REGNAME 0x0400
+# define RXapif_REGNAMES 0x0800
+# define RXapif_REGNAMES_COUNT 0x1000
/*
-=head1 REGEXP Functions
-
=for apidoc Am|REGEXP *|SvRX|SV *sv
Convenience macro to get the REGEXP from a SV. This is approximately
if (SvTYPE(sv) == SVt_REGEXP)
return (REGEXP*) sv;
-NULL will be returned if a REGEXP* is not found.
+C<NULL> will be returned if a REGEXP* is not found.
=for apidoc Am|bool|SvRXOK|SV* sv
=cut
*/
-#define SvRX(sv) (Perl_get_re_arg(aTHX_ sv))
-#define SvRXOK(sv) (Perl_get_re_arg(aTHX_ sv) ? TRUE : FALSE)
+# define SvRX(sv) (Perl_get_re_arg(aTHX_ sv))
+# define SvRXOK(sv) cBOOL(Perl_get_re_arg(aTHX_ sv))
/* Flags stored in regexp->extflags
*
*/
-#include "op_reg_common.h"
-
-#define RXf_PMf_STD_PMMOD (RXf_PMf_MULTILINE|RXf_PMf_SINGLELINE|RXf_PMf_FOLD|RXf_PMf_EXTENDED)
-
-#define CASE_STD_PMMOD_FLAGS_PARSE_SET(pmfl) \
- case IGNORE_PAT_MOD: *(pmfl) |= RXf_PMf_FOLD; break; \
- case MULTILINE_PAT_MOD: *(pmfl) |= RXf_PMf_MULTILINE; break; \
- case SINGLE_PAT_MOD: *(pmfl) |= RXf_PMf_SINGLELINE; break; \
- case XTENDED_PAT_MOD: *(pmfl) |= RXf_PMf_EXTENDED; break
+# include "op_reg_common.h"
+
+# define RXf_PMf_STD_PMMOD (RXf_PMf_MULTILINE|RXf_PMf_SINGLELINE|RXf_PMf_FOLD|RXf_PMf_EXTENDED|RXf_PMf_EXTENDED_MORE|RXf_PMf_NOCAPTURE)
+
+# define CASE_STD_PMMOD_FLAGS_PARSE_SET(pmfl, x_count) \
+ case IGNORE_PAT_MOD: *(pmfl) |= RXf_PMf_FOLD; break; \
+ case MULTILINE_PAT_MOD: *(pmfl) |= RXf_PMf_MULTILINE; break; \
+ case SINGLE_PAT_MOD: *(pmfl) |= RXf_PMf_SINGLELINE; break; \
+ case XTENDED_PAT_MOD: if (x_count == 0) { \
+ *(pmfl) |= RXf_PMf_EXTENDED; \
+ *(pmfl) &= ~RXf_PMf_EXTENDED_MORE; \
+ } \
+ else { \
+ *(pmfl) |= RXf_PMf_EXTENDED \
+ |RXf_PMf_EXTENDED_MORE; \
+ } \
+ (x_count)++; break; \
+ case NOCAPTURE_PAT_MOD: *(pmfl) |= RXf_PMf_NOCAPTURE; break;
/* Note, includes charset ones, assumes 0 is the default for them */
-#define STD_PMMOD_FLAGS_CLEAR(pmfl) \
- *(pmfl) &= ~(RXf_PMf_FOLD|RXf_PMf_MULTILINE|RXf_PMf_SINGLELINE|RXf_PMf_EXTENDED|RXf_PMf_CHARSET)
+# define STD_PMMOD_FLAGS_CLEAR(pmfl) \
+ *(pmfl) &= ~(RXf_PMf_FOLD|RXf_PMf_MULTILINE|RXf_PMf_SINGLELINE|RXf_PMf_EXTENDED|RXf_PMf_EXTENDED_MORE|RXf_PMf_CHARSET|RXf_PMf_NOCAPTURE)
/* chars and strings used as regex pattern modifiers
* Singular is a 'c'har, plural is a "string"
* for compatibility reasons with Regexp::Common which highjacked (?k:...)
* for its own uses. So 'k' is out as well.
*/
-#define DEFAULT_PAT_MOD '^' /* Short for all the default modifiers */
-#define EXEC_PAT_MOD 'e'
-#define KEEPCOPY_PAT_MOD 'p'
-#define ONCE_PAT_MOD 'o'
-#define GLOBAL_PAT_MOD 'g'
-#define CONTINUE_PAT_MOD 'c'
-#define MULTILINE_PAT_MOD 'm'
-#define SINGLE_PAT_MOD 's'
-#define IGNORE_PAT_MOD 'i'
-#define XTENDED_PAT_MOD 'x'
-#define NONDESTRUCT_PAT_MOD 'r'
-#define LOCALE_PAT_MOD 'l'
-#define UNICODE_PAT_MOD 'u'
-#define DEPENDS_PAT_MOD 'd'
-#define ASCII_RESTRICT_PAT_MOD 'a'
-
-#define ONCE_PAT_MODS "o"
-#define KEEPCOPY_PAT_MODS "p"
-#define EXEC_PAT_MODS "e"
-#define LOOP_PAT_MODS "gc"
-#define NONDESTRUCT_PAT_MODS "r"
-#define LOCALE_PAT_MODS "l"
-#define UNICODE_PAT_MODS "u"
-#define DEPENDS_PAT_MODS "d"
-#define ASCII_RESTRICT_PAT_MODS "a"
-#define ASCII_MORE_RESTRICT_PAT_MODS "aa"
+# define DEFAULT_PAT_MOD '^' /* Short for all the default modifiers */
+# define EXEC_PAT_MOD 'e'
+# define KEEPCOPY_PAT_MOD 'p'
+# define NOCAPTURE_PAT_MOD 'n'
+# define ONCE_PAT_MOD 'o'
+# define GLOBAL_PAT_MOD 'g'
+# define CONTINUE_PAT_MOD 'c'
+# define MULTILINE_PAT_MOD 'm'
+# define SINGLE_PAT_MOD 's'
+# define IGNORE_PAT_MOD 'i'
+# define XTENDED_PAT_MOD 'x'
+# define NONDESTRUCT_PAT_MOD 'r'
+# define LOCALE_PAT_MOD 'l'
+# define UNICODE_PAT_MOD 'u'
+# define DEPENDS_PAT_MOD 'd'
+# define ASCII_RESTRICT_PAT_MOD 'a'
+
+# define ONCE_PAT_MODS "o"
+# define KEEPCOPY_PAT_MODS "p"
+# define NOCAPTURE_PAT_MODS "n"
+# define EXEC_PAT_MODS "e"
+# define LOOP_PAT_MODS "gc"
+# define NONDESTRUCT_PAT_MODS "r"
+# define LOCALE_PAT_MODS "l"
+# define UNICODE_PAT_MODS "u"
+# define DEPENDS_PAT_MODS "d"
+# define ASCII_RESTRICT_PAT_MODS "a"
+# define ASCII_MORE_RESTRICT_PAT_MODS "aa"
/* This string is expected by regcomp.c to be ordered so that the first
* character is the flag in bit RXf_PMf_STD_PMMOD_SHIFT of extflags; the next
* character is bit +1, etc. */
-#define STD_PAT_MODS "msix"
+# define STD_PAT_MODS "msixxn"
-#define CHARSET_PAT_MODS ASCII_RESTRICT_PAT_MODS DEPENDS_PAT_MODS LOCALE_PAT_MODS UNICODE_PAT_MODS
+# define CHARSET_PAT_MODS ASCII_RESTRICT_PAT_MODS DEPENDS_PAT_MODS LOCALE_PAT_MODS UNICODE_PAT_MODS
/* This string is expected by XS_re_regexp_pattern() in universal.c to be ordered
* so that the first character is the flag in bit RXf_PMf_STD_PMMOD_SHIFT of
* extflags; the next character is in bit +1, etc. */
-#define INT_PAT_MODS STD_PAT_MODS KEEPCOPY_PAT_MODS
+# define INT_PAT_MODS STD_PAT_MODS KEEPCOPY_PAT_MODS
-#define EXT_PAT_MODS ONCE_PAT_MODS KEEPCOPY_PAT_MODS
-#define QR_PAT_MODS STD_PAT_MODS EXT_PAT_MODS CHARSET_PAT_MODS
-#define M_PAT_MODS QR_PAT_MODS LOOP_PAT_MODS
-#define S_PAT_MODS M_PAT_MODS EXEC_PAT_MODS NONDESTRUCT_PAT_MODS
+# define EXT_PAT_MODS ONCE_PAT_MODS KEEPCOPY_PAT_MODS NOCAPTURE_PAT_MODS
+# define QR_PAT_MODS STD_PAT_MODS EXT_PAT_MODS CHARSET_PAT_MODS
+# define M_PAT_MODS QR_PAT_MODS LOOP_PAT_MODS
+# define S_PAT_MODS M_PAT_MODS EXEC_PAT_MODS NONDESTRUCT_PAT_MODS
/*
* NOTE: if you modify any RXf flags you should run regen.pl or
*
*/
-/* Leave some space, so future bit allocations can go either in the shared or
- * unshared area without affecting binary compatibility */
-#define RXf_BASE_SHIFT (_RXf_PMf_SHIFT_NEXT)
-
/*
- Set in Perl_pmruntime if op_flags & OPf_SPECIAL, i.e. split. Will
- be used by regex engines to check whether they should set
- RXf_SKIPWHITE
+ Set in Perl_pmruntime for a split. Will be used by regex engines to
+ check whether they should set RXf_SKIPWHITE
*/
-#define RXf_SPLIT (1<<(RXf_BASE_SHIFT-1))
-#if RXf_SPLIT != RXf_PMf_SPLIT
-# error "RXf_SPLIT does not match RXf_PMf_SPLIT"
-#endif
-
-/* Manually decorate this function with gcc-style attributes just to
- * avoid having to restructure the header files and their called order,
- * as proto.h would have to be included before this file, and isn't */
-
-PERL_STATIC_INLINE const char *
-get_regex_charset_name(const U32 flags, STRLEN* const lenp)
- __attribute__warn_unused_result__;
-
-#define MAX_CHARSET_NAME_LENGTH 2
-
-PERL_STATIC_INLINE const char *
-get_regex_charset_name(const U32 flags, STRLEN* const lenp)
-{
- /* Returns a string that corresponds to the name of the regex character set
- * given by 'flags', and *lenp is set the length of that string, which
- * cannot exceed MAX_CHARSET_NAME_LENGTH characters */
-
- *lenp = 1;
- switch (get_regex_charset(flags)) {
- case REGEX_DEPENDS_CHARSET: return DEPENDS_PAT_MODS;
- case REGEX_LOCALE_CHARSET: return LOCALE_PAT_MODS;
- case REGEX_UNICODE_CHARSET: return UNICODE_PAT_MODS;
- case REGEX_ASCII_RESTRICTED_CHARSET: return ASCII_RESTRICT_PAT_MODS;
- case REGEX_ASCII_MORE_RESTRICTED_CHARSET:
- *lenp = 2;
- return ASCII_MORE_RESTRICT_PAT_MODS;
- default:
- NOT_REACHED; /* NOTREACHED */
- }
-}
+# define RXf_SPLIT RXf_PMf_SPLIT
+
+/* Currently the regex flags occupy a single 32-bit word. Not all bits are
+ * currently used. The lower bits are shared with their corresponding PMf flag
+ * bits, up to but not including _RXf_PMf_SHIFT_NEXT. The unused bits
+ * immediately follow; finally the used RXf-only (unshared) bits, so that the
+ * highest bit in the word is used. This gathers all the unused bits as a pool
+ * in the middle, like so: 11111111111111110000001111111111
+ * where the '1's represent used bits, and the '0's unused. This design allows
+ * us to allocate off one end of the pool if we need to add a shared bit, and
+ * off the other end if we need a non-shared bit, without disturbing the other
+ * bits. This maximizes the likelihood of being able to change things without
+ * breaking binary compatibility.
+ *
+ * To add shared bits, do so in op_reg_common.h. This should change
+ * _RXf_PMf_SHIFT_NEXT so that things won't compile. Then come to regexp.h and
+ * op.h and adjust the constant adders in the definitions of RXf_BASE_SHIFT and
+ * Pmf_BASE_SHIFT down by the number of shared bits you added. That's it.
+ * Things should be binary compatible. But if either of these gets to having
+ * to subtract rather than add, leave at 0 and instead adjust all the entries
+ * that are in terms of it. But if the first one of those is already
+ * RXf_BASE_SHIFT+0, there are no bits left, and a redesign is in order.
+ *
+ * To remove unshared bits, just delete its entry. If you're where breaking
+ * binary compatibility is ok to do, you might want to adjust things to move
+ * the newly opened space so that it gets absorbed into the common pool.
+ *
+ * To add unshared bits, first use up any gaps in the middle. Otherwise,
+ * allocate off the low end until you get to RXf_BASE_SHIFT+0. If that isn't
+ * enough, move RXf_BASE_SHIFT down (if possible) and add the new bit at the
+ * other end instead; this preserves binary compatibility.
+ *
+ * For the regexp bits, PL_reg_extflags_name[] in regnodes.h has a comment
+ * giving which bits are used/unused */
-/* Do we have some sort of anchor? */
-#define RXf_IS_ANCHORED (1<<(RXf_BASE_SHIFT+0))
-#define RXf_UNUSED1 (1<<(RXf_BASE_SHIFT+1))
-#define RXf_UNUSED2 (1<<(RXf_BASE_SHIFT+2))
-#define RXf_UNUSED3 (1<<(RXf_BASE_SHIFT+3))
-#define RXf_UNUSED4 (1<<(RXf_BASE_SHIFT+4))
-#define RXf_UNUSED5 (1<<(RXf_BASE_SHIFT+5))
+# define RXf_BASE_SHIFT (_RXf_PMf_SHIFT_NEXT + 2)
/* What we have seen */
-#define RXf_NO_INPLACE_SUBST (1<<(RXf_BASE_SHIFT+6))
-#define RXf_EVAL_SEEN (1<<(RXf_BASE_SHIFT+7))
-#define RXf_UNUSED8 (1<<(RXf_BASE_SHIFT+8))
+# define RXf_NO_INPLACE_SUBST (1U<<(RXf_BASE_SHIFT+2))
+# define RXf_EVAL_SEEN (1U<<(RXf_BASE_SHIFT+3))
/* Special */
-#define RXf_UNBOUNDED_QUANTIFIER_SEEN (1<<(RXf_BASE_SHIFT+9))
-#define RXf_CHECK_ALL (1<<(RXf_BASE_SHIFT+10))
+# define RXf_UNBOUNDED_QUANTIFIER_SEEN (1U<<(RXf_BASE_SHIFT+4))
+# define RXf_CHECK_ALL (1U<<(RXf_BASE_SHIFT+5))
/* UTF8 related */
-#define RXf_MATCH_UTF8 (1<<(RXf_BASE_SHIFT+11)) /* $1 etc are utf8 */
+# define RXf_MATCH_UTF8 (1U<<(RXf_BASE_SHIFT+6)) /* $1 etc are utf8 */
/* Intuit related */
-#define RXf_USE_INTUIT_NOML (1<<(RXf_BASE_SHIFT+12))
-#define RXf_USE_INTUIT_ML (1<<(RXf_BASE_SHIFT+13))
-#define RXf_INTUIT_TAIL (1<<(RXf_BASE_SHIFT+14))
-#define RXf_USE_INTUIT (RXf_USE_INTUIT_NOML|RXf_USE_INTUIT_ML)
+# define RXf_USE_INTUIT_NOML (1U<<(RXf_BASE_SHIFT+7))
+# define RXf_USE_INTUIT_ML (1U<<(RXf_BASE_SHIFT+8))
+# define RXf_INTUIT_TAIL (1U<<(RXf_BASE_SHIFT+9))
+# define RXf_USE_INTUIT (RXf_USE_INTUIT_NOML|RXf_USE_INTUIT_ML)
+
+/* Do we have some sort of anchor? */
+# define RXf_IS_ANCHORED (1U<<(RXf_BASE_SHIFT+10))
/* Copy and tainted info */
-#define RXf_COPY_DONE (1<<(RXf_BASE_SHIFT+16))
+# define RXf_COPY_DONE (1U<<(RXf_BASE_SHIFT+11))
/* post-execution: $1 et al are tainted */
-#define RXf_TAINTED_SEEN (1<<(RXf_BASE_SHIFT+17))
+# define RXf_TAINTED_SEEN (1U<<(RXf_BASE_SHIFT+12))
/* this pattern was tainted during compilation */
-#define RXf_TAINTED (1<<(RXf_BASE_SHIFT+18))
+# define RXf_TAINTED (1U<<(RXf_BASE_SHIFT+13))
/* Flags indicating special patterns */
-#define RXf_START_ONLY (1<<(RXf_BASE_SHIFT+19)) /* Pattern is /^/ */
-#define RXf_SKIPWHITE (1<<(RXf_BASE_SHIFT+20)) /* Pattern is for a split " " */
-#define RXf_WHITE (1<<(RXf_BASE_SHIFT+21)) /* Pattern is /\s+/ */
-#define RXf_NULL (1U<<(RXf_BASE_SHIFT+22)) /* Pattern is // */
-#if RXf_BASE_SHIFT+22 > 31
-# error Too many RXf_PMf bits used. See regnodes.h for any spare in middle
-#endif
+# define RXf_START_ONLY (1U<<(RXf_BASE_SHIFT+14)) /* Pattern is /^/ */
+# define RXf_SKIPWHITE (1U<<(RXf_BASE_SHIFT+15)) /* Pattern is for a */
+ /* split " " */
+# define RXf_WHITE (1U<<(RXf_BASE_SHIFT+16)) /* Pattern is /\s+/ */
+# define RXf_NULL (1U<<(RXf_BASE_SHIFT+17)) /* Pattern is // */
+
+/* See comments at the beginning of these defines about adding bits. The
+ * highest bit position should be used, so that if RXf_BASE_SHIFT gets
+ * increased, the #error below will be triggered so that you will be reminded
+ * to adjust things at the other end to keep the bit positions unchanged */
+# if RXf_BASE_SHIFT+17 > 31
+# error Too many RXf_PMf bits used. See comments at beginning of these for what to do
+# endif
/*
* NOTE: if you modify any RXf flags you should run regen.pl or
*
*/
-#ifdef NO_TAINT_SUPPORT
-# define RX_ISTAINTED(prog) 0
-# define RX_TAINT_on(prog) NOOP
-# define RXp_MATCH_TAINTED(prog) 0
-# define RX_MATCH_TAINTED(prog) 0
-# define RXp_MATCH_TAINTED_on(prog) NOOP
-# define RX_MATCH_TAINTED_on(prog) NOOP
-# define RX_MATCH_TAINTED_off(prog) NOOP
-#else
-# define RX_ISTAINTED(prog) (RX_EXTFLAGS(prog) & RXf_TAINTED)
-# define RX_TAINT_on(prog) (RX_EXTFLAGS(prog) |= RXf_TAINTED)
-# define RXp_MATCH_TAINTED(prog) (RXp_EXTFLAGS(prog) & RXf_TAINTED_SEEN)
-# define RX_MATCH_TAINTED(prog) (RX_EXTFLAGS(prog) & RXf_TAINTED_SEEN)
-# define RXp_MATCH_TAINTED_on(prog) (RXp_EXTFLAGS(prog) |= RXf_TAINTED_SEEN)
-# define RX_MATCH_TAINTED_on(prog) (RX_EXTFLAGS(prog) |= RXf_TAINTED_SEEN)
-# define RX_MATCH_TAINTED_off(prog) (RX_EXTFLAGS(prog) &= ~RXf_TAINTED_SEEN)
-#endif
-
-#define RX_HAS_CUTGROUP(prog) ((prog)->intflags & PREGf_CUTGROUP_SEEN)
-#define RX_MATCH_TAINTED_set(prog, t) ((t) \
- ? RX_MATCH_TAINTED_on(prog) \
- : RX_MATCH_TAINTED_off(prog))
-
-#define RXp_MATCH_COPIED(prog) (RXp_EXTFLAGS(prog) & RXf_COPY_DONE)
-#define RX_MATCH_COPIED(prog) (RX_EXTFLAGS(prog) & RXf_COPY_DONE)
-#define RXp_MATCH_COPIED_on(prog) (RXp_EXTFLAGS(prog) |= RXf_COPY_DONE)
-#define RX_MATCH_COPIED_on(prog) (RX_EXTFLAGS(prog) |= RXf_COPY_DONE)
-#define RXp_MATCH_COPIED_off(prog) (RXp_EXTFLAGS(prog) &= ~RXf_COPY_DONE)
-#define RX_MATCH_COPIED_off(prog) (RX_EXTFLAGS(prog) &= ~RXf_COPY_DONE)
-#define RX_MATCH_COPIED_set(prog,t) ((t) \
- ? RX_MATCH_COPIED_on(prog) \
- : RX_MATCH_COPIED_off(prog))
-
-#define RXp_EXTFLAGS(rx) ((rx)->extflags)
-#define RXp_COMPFLAGS(rx) ((rx)->compflags)
+# ifdef NO_TAINT_SUPPORT
+# define RX_ISTAINTED(rx_sv) 0
+# define RXp_ISTAINTED(prog) 0
+# define RX_TAINT_on(rx_sv) NOOP
+# define RXp_MATCH_TAINTED(prog) 0
+# define RX_MATCH_TAINTED(rx_sv) 0
+# define RXp_MATCH_TAINTED_on(prog) NOOP
+# define RX_MATCH_TAINTED_on(rx_sv) NOOP
+# define RXp_MATCH_TAINTED_off(prog) NOOP
+# define RX_MATCH_TAINTED_off(rx_sv) NOOP
+# else
+# define RX_ISTAINTED(rx_sv) (RX_EXTFLAGS(rx_sv) & RXf_TAINTED)
+# define RXp_ISTAINTED(prog) (RXp_EXTFLAGS(prog) & RXf_TAINTED)
+# define RX_TAINT_on(rx_sv) (RX_EXTFLAGS(rx_sv) |= RXf_TAINTED)
+# define RXp_MATCH_TAINTED(prog) (RXp_EXTFLAGS(prog) & RXf_TAINTED_SEEN)
+# define RX_MATCH_TAINTED(rx_sv) (RX_EXTFLAGS(rx_sv) & RXf_TAINTED_SEEN)
+# define RXp_MATCH_TAINTED_on(prog) (RXp_EXTFLAGS(prog) |= RXf_TAINTED_SEEN)
+# define RX_MATCH_TAINTED_on(rx_sv) (RX_EXTFLAGS(rx_sv) |= RXf_TAINTED_SEEN)
+# define RXp_MATCH_TAINTED_off(prog) (RXp_EXTFLAGS(prog) &= ~RXf_TAINTED_SEEN)
+# define RX_MATCH_TAINTED_off(rx_sv) (RX_EXTFLAGS(rx_sv) &= ~RXf_TAINTED_SEEN)
+# endif
+
+# define RXp_HAS_CUTGROUP(prog) ((prog)->intflags & PREGf_CUTGROUP_SEEN)
+
+# define RX_MATCH_TAINTED_set(rx_sv, t) ((t) \
+ ? RX_MATCH_TAINTED_on(rx_sv) \
+ : RX_MATCH_TAINTED_off(rx_sv))
+
+# define RXp_MATCH_COPIED(prog) (RXp_EXTFLAGS(prog) & RXf_COPY_DONE)
+# define RX_MATCH_COPIED(rx_sv) (RX_EXTFLAGS(rx_sv) & RXf_COPY_DONE)
+# define RXp_MATCH_COPIED_on(prog) (RXp_EXTFLAGS(prog) |= RXf_COPY_DONE)
+# define RX_MATCH_COPIED_on(rx_sv) (RX_EXTFLAGS(rx_sv) |= RXf_COPY_DONE)
+# define RXp_MATCH_COPIED_off(prog) (RXp_EXTFLAGS(prog) &= ~RXf_COPY_DONE)
+# define RX_MATCH_COPIED_off(rx_sv) (RX_EXTFLAGS(rx_sv) &= ~RXf_COPY_DONE)
+# define RX_MATCH_COPIED_set(rx_sv,t) ((t) \
+ ? RX_MATCH_COPIED_on(rx_sv) \
+ : RX_MATCH_COPIED_off(rx_sv))
+
+# define RXp_EXTFLAGS(rx) ((rx)->extflags)
+# define RXp_COMPFLAGS(rx) ((rx)->compflags)
/* For source compatibility. We used to store these explicitly. */
-#define RX_PRECOMP(prog) (RX_WRAPPED(prog) + ReANY(prog)->pre_prefix)
-#define RX_PRECOMP_const(prog) (RX_WRAPPED_const(prog) + ReANY(prog)->pre_prefix)
+# define RX_PRECOMP(rx_sv) (RX_WRAPPED(rx_sv) \
+ + ReANY(rx_sv)->pre_prefix)
+# define RX_PRECOMP_const(rx_sv) (RX_WRAPPED_const(rx_sv) \
+ + ReANY(rx_sv)->pre_prefix)
/* FIXME? Are we hardcoding too much here and constraining plugin extension
writers? Specifically, the value 1 assumes that the wrapped version always
has exactly one character at the end, a ')'. Will that always be true? */
-#define RX_PRELEN(prog) (RX_WRAPLEN(prog) - ReANY(prog)->pre_prefix - 1)
-#define RX_WRAPPED(prog) ReANY(prog)->xpv_len_u.xpvlenu_pv
-#define RX_WRAPPED_const(prog) ((const char *)RX_WRAPPED(prog))
-#define RX_WRAPLEN(prog) SvCUR(prog)
-#define RX_CHECK_SUBSTR(prog) (ReANY(prog)->check_substr)
-#define RX_REFCNT(prog) SvREFCNT(prog)
-#define RX_EXTFLAGS(prog) RXp_EXTFLAGS(ReANY(prog))
-#define RX_COMPFLAGS(prog) RXp_COMPFLAGS(ReANY(prog))
-#define RX_ENGINE(prog) (ReANY(prog)->engine)
-#define RX_SUBBEG(prog) (ReANY(prog)->subbeg)
-#define RX_SUBOFFSET(prog) (ReANY(prog)->suboffset)
-#define RX_SUBCOFFSET(prog) (ReANY(prog)->subcoffset)
-#define RX_OFFS(prog) (ReANY(prog)->offs)
-#define RX_NPARENS(prog) (ReANY(prog)->nparens)
-#define RX_SUBLEN(prog) (ReANY(prog)->sublen)
-#define RX_MINLEN(prog) (ReANY(prog)->minlen)
-#define RX_MINLENRET(prog) (ReANY(prog)->minlenret)
-#define RX_GOFS(prog) (ReANY(prog)->gofs)
-#define RX_LASTPAREN(prog) (ReANY(prog)->lastparen)
-#define RX_LASTCLOSEPAREN(prog) (ReANY(prog)->lastcloseparen)
-#define RX_SAVED_COPY(prog) (ReANY(prog)->saved_copy)
+# define RX_PRELEN(rx_sv) (RX_WRAPLEN(rx_sv) \
+ - ReANY(rx_sv)->pre_prefix - 1)
+
+# define RX_WRAPPED(rx_sv) SvPVX(rx_sv)
+# define RX_WRAPPED_const(rx_sv) SvPVX_const(rx_sv)
+# define RX_WRAPLEN(rx_sv) SvCUR(rx_sv)
+# define RX_CHECK_SUBSTR(rx_sv) (ReANY(rx_sv)->check_substr)
+# define RX_REFCNT(rx_sv) SvREFCNT(rx_sv)
+# define RX_EXTFLAGS(rx_sv) RXp_EXTFLAGS(ReANY(rx_sv))
+# define RX_COMPFLAGS(rx_sv) RXp_COMPFLAGS(ReANY(rx_sv))
+# define RXp_ENGINE(prog) ((prog)->engine)
+# define RX_ENGINE(rx_sv) (RXp_ENGINE(ReANY(rx_sv)))
+# define RXp_SUBBEG(prog) ((prog)->subbeg)
+# define RX_SUBBEG(rx_sv) (RXp_SUBBEG(ReANY(rx_sv)))
+# define RXp_SUBOFFSET(prog) ((prog)->suboffset)
+# define RX_SUBOFFSET(rx_sv) (RXp_SUBOFFSET(ReANY(rx_sv)))
+# define RXp_SUBCOFFSET(prog) ((prog)->subcoffset)
+# define RX_SUBCOFFSET(rx_sv) (RXp_SUBCOFFSET(ReANY(rx_sv)))
+# define RXp_OFFSp(prog) ((prog)->offs)
+# define RX_OFFSp(rx_sv) (RXp_OFFSp(ReANY(rx_sv)))
+# define RXp_LOGICAL_NPARENS(prog) ((prog)->logical_nparens)
+# define RX_LOGICAL_NPARENS(rx_sv) (RXp_LOGICAL_NPARENS(ReANY(rx_sv)))
+# define RXp_LOGICAL_TO_PARNO(prog) ((prog)->logical_to_parno)
+# define RX_LOGICAL_TO_PARNO(rx_sv) (RXp_LOGICAL_TO_PARNO(ReANY(rx_sv)))
+# define RXp_PARNO_TO_LOGICAL(prog) ((prog)->parno_to_logical)
+# define RX_PARNO_TO_LOGICAL(rx_sv) (RXp_PARNO_TO_LOGICAL(ReANY(rx_sv)))
+# define RXp_PARNO_TO_LOGICAL_NEXT(prog) ((prog)->parno_to_logical_next)
+# define RX_PARNO_TO_LOGICAL_NEXT(rx_sv) (RXp_PARNO_TO_LOGICAL_NEXT(ReANY(rx_sv)))
+# define RXp_NPARENS(prog) ((prog)->nparens)
+# define RX_NPARENS(rx_sv) (RXp_NPARENS(ReANY(rx_sv)))
+# define RXp_SUBLEN(prog) ((prog)->sublen)
+# define RX_SUBLEN(rx_sv) (RXp_SUBLEN(ReANY(rx_sv)))
+# define RXp_MINLEN(prog) ((prog)->minlen)
+# define RX_MINLEN(rx_sv) (RXp_MINLEN(ReANY(rx_sv)))
+# define RXp_MINLENRET(prog) ((prog)->minlenret)
+# define RX_MINLENRET(rx_sv) (RXp_MINLENRET(ReANY(rx_sv)))
+# define RXp_GOFS(prog) ((prog)->gofs)
+# define RX_GOFS(rx_sv) (RXp_GOFS(ReANY(rx_sv)))
+# define RXp_LASTPAREN(prog) ((prog)->lastparen)
+# define RX_LASTPAREN(rx_sv) (RXp_LASTPAREN(ReANY(rx_sv)))
+# define RXp_LASTCLOSEPAREN(prog) ((prog)->lastcloseparen)
+# define RX_LASTCLOSEPAREN(rx_sv) (RXp_LASTCLOSEPAREN(ReANY(rx_sv)))
+# define RXp_SAVED_COPY(prog) ((prog)->saved_copy)
+# define RX_SAVED_COPY(rx_sv) (RXp_SAVED_COPY(ReANY(rx_sv)))
+# define RXp_SUBSTRS(prog) ((prog)->substrs)
+# define RX_SUBSTRS(rx_sv) (RXp_SUBSTRS(ReANY(rx_sv)))
+# define RXp_PPRIVATE(prog) ((prog)->pprivate)
+# define RX_PPRIVATE(rx_sv) (RXp_PPRIVATE(ReANY(rx_sv)))
+# define RXp_QR_ANONCV(prog) ((prog)->qr_anoncv)
+# define RX_QR_ANONCV(rx_sv) (RXp_QR_ANONCV(ReANY(rx_sv)))
+# define RXp_MOTHER_RE(prog) ((prog)->mother_re)
+# define RX_MOTHER_RE(rx_sv) (RXp_MOTHER_RE(ReANY(rx_sv)))
+# define RXp_PRE_PREFIX(prog) ((prog)->pre_prefix)
+# define RX_PRE_PREFIX(rx_sv) (RXp_PRE_PREFIX(ReANY(rx_sv)))
+
/* last match was zero-length */
-#define RX_ZERO_LEN(prog) \
- (RX_OFFS(prog)[0].start + (SSize_t)RX_GOFS(prog) \
- == RX_OFFS(prog)[0].end)
+# define RXp_ZERO_LEN(prog) \
+ (RXp_OFFS_START(prog,0) + (SSize_t)RXp_GOFS(prog) \
+ == RXp_OFFS_END(prog,0))
+# define RX_ZERO_LEN(rx_sv) (RXp_ZERO_LEN(ReANY(rx_sv)))
#endif /* PLUGGABLE_RE_EXTENSION */
/* Stuff that needs to be included in the pluggable extension goes below here */
#ifdef PERL_ANY_COW
-#define RX_MATCH_COPY_FREE(rx) \
- STMT_START {if (RX_SAVED_COPY(rx)) { \
- SV_CHECK_THINKFIRST_COW_DROP(RX_SAVED_COPY(rx)); \
- } \
- if (RX_MATCH_COPIED(rx)) { \
- Safefree(RX_SUBBEG(rx)); \
- RX_MATCH_COPIED_off(rx); \
- }} STMT_END
+# define RXp_MATCH_COPY_FREE(prog) \
+ STMT_START { \
+ if (RXp_SAVED_COPY(prog)) { \
+ SV_CHECK_THINKFIRST_COW_DROP(RXp_SAVED_COPY(prog)); \
+ } \
+ if (RXp_MATCH_COPIED(prog)) { \
+ Safefree(RXp_SUBBEG(prog)); \
+ RXp_MATCH_COPIED_off(prog); \
+ } \
+ } STMT_END
#else
-#define RX_MATCH_COPY_FREE(rx) \
- STMT_START {if (RX_MATCH_COPIED(rx)) { \
- Safefree(RX_SUBBEG(rx)); \
- RX_MATCH_COPIED_off(rx); \
- }} STMT_END
+# define RXp_MATCH_COPY_FREE(prog) \
+ STMT_START { \
+ if (RXp_MATCH_COPIED(prog)) { \
+ Safefree(RXp_SUBBEG(prog)); \
+ RXp_MATCH_COPIED_off(prog); \
+ } \
+ } STMT_END
#endif
-
-#define RXp_MATCH_UTF8(prog) (RXp_EXTFLAGS(prog) & RXf_MATCH_UTF8)
-#define RX_MATCH_UTF8(prog) (RX_EXTFLAGS(prog) & RXf_MATCH_UTF8)
-#define RX_MATCH_UTF8_on(prog) (RX_EXTFLAGS(prog) |= RXf_MATCH_UTF8)
-#define RX_MATCH_UTF8_off(prog) (RX_EXTFLAGS(prog) &= ~RXf_MATCH_UTF8)
-#define RX_MATCH_UTF8_set(prog, t) ((t) \
- ? RX_MATCH_UTF8_on(prog) \
- : RX_MATCH_UTF8_off(prog))
+#define RX_MATCH_COPY_FREE(rx_sv) RXp_MATCH_COPY_FREE(ReANY(rx_sv))
+
+#define RXp_MATCH_UTF8(prog) (RXp_EXTFLAGS(prog) & RXf_MATCH_UTF8)
+#define RX_MATCH_UTF8(rx_sv) (RX_EXTFLAGS(rx_sv) & RXf_MATCH_UTF8)
+#define RXp_MATCH_UTF8_on(prog) (RXp_EXTFLAGS(prog) |= RXf_MATCH_UTF8)
+#define RX_MATCH_UTF8_on(rx_sv) (RXp_MATCH_UTF8_on(ReANY(rx_sv)))
+#define RXp_MATCH_UTF8_off(prog) (RXp_EXTFLAGS(prog) &= ~RXf_MATCH_UTF8)
+#define RX_MATCH_UTF8_off(rx_sv) (RXp_MATCH_UTF8_off(ReANY(rx_sv))
+#define RXp_MATCH_UTF8_set(prog, t) ((t) \
+ ? RXp_MATCH_UTF8_on(prog) \
+ : RXp_MATCH_UTF8_off(prog))
+#define RX_MATCH_UTF8_set(rx_sv, t) (RXp_MATCH_UTF8_set(ReANY(rx_sv), t))
/* Whether the pattern stored at RX_WRAPPED is in UTF-8 */
-#define RX_UTF8(prog) SvUTF8(prog)
+#define RX_UTF8(rx_sv) SvUTF8(rx_sv)
/* bits in flags arg of Perl_regexec_flags() */
the start pos (so s/.\G// would fail
on second iteration */
-#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
+#if defined(PERL_USE_GCC_BRACE_GROUPS)
# define ReREFCNT_inc(re) \
({ \
- /* This is here to generate a casting warning if incorrect. */ \
- REGEXP *const _rerefcnt_inc = (re); \
- assert(SvTYPE(_rerefcnt_inc) == SVt_REGEXP); \
- SvREFCNT_inc(_rerefcnt_inc); \
- _rerefcnt_inc; \
+ /* This is here to generate a casting warning if incorrect. */ \
+ REGEXP *const _rerefcnt_inc = (re); \
+ assert(SvTYPE(_rerefcnt_inc) == SVt_REGEXP); \
+ SvREFCNT_inc(_rerefcnt_inc); \
+ _rerefcnt_inc; \
})
# define ReREFCNT_dec(re) \
({ \
- /* This is here to generate a casting warning if incorrect. */ \
- REGEXP *const _rerefcnt_dec = (re); \
- SvREFCNT_dec(_rerefcnt_dec); \
+ /* This is here to generate a casting warning if incorrect. */ \
+ REGEXP *const _rerefcnt_dec = (re); \
+ SvREFCNT_dec(_rerefcnt_dec); \
})
#else
# define ReREFCNT_dec(re) SvREFCNT_dec(re)
# define ReREFCNT_inc(re) ((REGEXP *) SvREFCNT_inc(re))
#endif
-#define ReANY(re) S_ReANY((const REGEXP *)(re))
+#define ReANY(re) Perl_ReANY((const REGEXP *)(re))
/* FIXME for plugins. */
STRLEN sublen; /* saved sublen field from rex */
STRLEN suboffset; /* saved suboffset field from rex */
STRLEN subcoffset; /* saved subcoffset field from rex */
+ SV *sv; /* $_ during (?{}) */
MAGIC *pos_magic; /* pos() magic attached to $_ */
SSize_t pos; /* the original value of pos() in pos_magic */
U8 pos_flags; /* flags to be restored; currently only MGf_BYTES*/
} regmatch_info_aux;
-/* some basic information about the current match that is created by
- * Perl_regexec_flags and then passed to regtry(), regmatch() etc.
- * It is allocated as a local var on the stack, so nothing should be
- * stored in it that needs preserving or clearing up on croak().
- * For that, see the aux_info and aux_info_eval members of the
- * regmatch_state union. */
+/*
+=for apidoc Ay||regmatch_info
+Some basic information about the current match that is created by
+Perl_regexec_flags and then passed to regtry(), regmatch() etc.
+It is allocated as a local var on the stack, so nothing should be
+stored in it that needs preserving or clearing up on croak().
+For that, see the aux_info and aux_info_eval members of the
+regmatch_state union.
+
+=cut
+*/
typedef struct {
REGEXP *prog; /* the regex being executed */
bool is_utf8_target; /* string being matched is utf8 */
bool warned; /* we have issued a recursion warning; no need for more */
} regmatch_info;
-
+
/* structures for holding and saving the state maintained by regmatch() */
#ifndef MAX_RECURSE_EVAL_NOCHANGE_DEPTH
-#define MAX_RECURSE_EVAL_NOCHANGE_DEPTH 1000
+# define MAX_RECURSE_EVAL_NOCHANGE_DEPTH 10
#endif
+/* The +1 is because everything matches itself, which isn't included in
+ * MAX_FOLD_FROMS; the +2 is based on the current Unicode standards needs, and
+ * is unlikely to change. An assertion should fail in regexec.c if it is too
+ * low. It is needed for certain edge cases involving multi-character folds
+ * when the first component also participates in a fold individually. */
+#define MAX_MATCHES (MAX_FOLD_FROMS + 1 + 2)
+
+struct next_matchable_info {
+ U8 first_byte_mask;
+ U8 first_byte_anded;
+ U32 mask32;
+ U32 anded32;
+ PERL_INT_FAST8_T count; /* Negative means not initialized */
+ PERL_UINT_FAST8_T min_length;
+ PERL_UINT_FAST8_T max_length;
+ PERL_UINT_FAST8_T initial_definitive;
+ PERL_UINT_FAST8_T initial_exact;
+ PERL_UINT_FAST8_T lengths[MAX_MATCHES];
+
+ /* The size is from trial and error, and could change with new Unicode
+ * standards, in which case there is an assertion that should start
+ * failing. This size could be calculated in one of the regen scripts
+ * dealing with Unicode, but khw thinks the likelihood of it changing is
+ * low enough that it isn't worth the effort. */
+ U8 matches[18];
+};
+
typedef I32 CHECKPOINT;
typedef struct regmatch_state {
int resume_state; /* where to jump to on return */
char *locinput; /* where to backtrack in string on failure */
+ char *loceol;
+ U8 *sr0; /* position of start of script run, or NULL */
union {
regmatch_info_aux_eval info_aux_eval;
- /* this is a fake union member that matches the first element
- * of each member that needs to store positive backtrack
- * information */
- struct {
- struct regmatch_state *prev_yes_state;
- } yes;
+ /* this is a fake union member that matches the first element
+ * of each member that needs to store positive backtrack
+ * information */
+ struct {
+ struct regmatch_state *prev_yes_state;
+ } yes;
+
+
+ /* NOTE: Regarding 'cp' and 'lastcp' in the following structs...
+ *
+ * In the majority of cases we use 'cp' for the "normal"
+ * checkpoint for paren saves, and 'lastcp' for the addtional
+ * paren saves that are done only under RE_PESSIMISTIC_PARENS.
+ *
+ * There may be a few cases where both are used always.
+ * Regardless they tend be used something like this:
+ *
+ * ST.cp = regcppush(rex, 0, maxopenparen);
+ * REGCP_SET(ST.lastcp);
+ *
+ * thus ST.cp holds the checkpoint from before we push parens,
+ * and ST.lastcp holds the checkpoint from afterwards.
+ */
/* branchlike members */
/* this is a fake union member that matches the first elements
* of each member that needs to behave like a branch */
struct {
- /* this first element must match u.yes */
- struct regmatch_state *prev_yes_state;
- U32 lastparen;
- U32 lastcloseparen;
- CHECKPOINT cp;
-
+ /* this first element must match u.yes */
+ struct regmatch_state *prev_yes_state;
+ U32 lastparen;
+ U32 lastcloseparen;
+ CHECKPOINT cp; /* see note above "struct branchlike" */
+ CHECKPOINT lastcp; /* see note above "struct branchlike" */
+ U16 before_paren;
+ U16 after_paren;
+
} branchlike;
-
- struct {
- /* the first elements must match u.branchlike */
- struct regmatch_state *prev_yes_state;
- U32 lastparen;
- U32 lastcloseparen;
- CHECKPOINT cp;
-
- regnode *next_branch; /* next branch node */
- } branch;
-
- struct {
- /* the first elements must match u.branchlike */
- struct regmatch_state *prev_yes_state;
- U32 lastparen;
- U32 lastcloseparen;
- CHECKPOINT cp;
-
- U32 accepted; /* how many accepting states left */
- bool longfold;/* saw a fold with a 1->n char mapping */
- U16 *jump; /* positive offsets from me */
- regnode *me; /* Which node am I - needed for jump tries*/
- U8 *firstpos;/* pos in string of first trie match */
- U32 firstchars;/* len in chars of firstpos from start */
- U16 nextword;/* next word to try */
- U16 topword; /* longest accepted word */
- } trie;
+
+ struct {
+ /* the first elements must match u.branchlike */
+ struct regmatch_state *prev_yes_state;
+ U32 lastparen;
+ U32 lastcloseparen;
+ CHECKPOINT cp; /* see note above "struct branchlike" */
+ CHECKPOINT lastcp; /* see note above "struct branchlike" */
+ U16 before_paren;
+ U16 after_paren;
+
+ regnode *next_branch; /* next branch node */
+ } branch;
+
+ struct {
+ /* the first elements must match u.branchlike */
+ struct regmatch_state *prev_yes_state;
+ U32 lastparen;
+ U32 lastcloseparen;
+ CHECKPOINT cp; /* see note above "struct branchlike" */
+ CHECKPOINT lastcp; /* see note above "struct branchlike" */
+ U16 before_paren;
+ U16 after_paren;
+
+ U32 accepted; /* how many accepting states left */
+ bool longfold; /* saw a fold with a 1->n char mapping */
+ U16 *jump; /* positive offsets from me */
+ U16 *j_before_paren;
+ U16 *j_after_paren;
+ regnode *me; /* Which node am I - needed for jump tries*/
+ U8 *firstpos; /* pos in string of first trie match */
+ U32 firstchars; /* len in chars of firstpos from start */
+ U16 nextword; /* next word to try */
+ U16 topword; /* longest accepted word */
+ } trie;
/* special types - these members are used to store state for special
regops like eval, if/then, lookaround and the markpoint state */
- struct {
- /* this first element must match u.yes */
- struct regmatch_state *prev_yes_state;
- struct regmatch_state *prev_eval;
- struct regmatch_state *prev_curlyx;
- REGEXP *prev_rex;
- CHECKPOINT cp; /* remember current savestack indexes */
- CHECKPOINT lastcp;
- U32 close_paren; /* which close bracket is our end */
- regnode *B; /* the node following us */
- } eval;
-
- struct {
- /* this first element must match u.yes */
- struct regmatch_state *prev_yes_state;
- I32 wanted;
- I32 logical; /* saved copy of 'logical' var */
- regnode *me; /* the IFMATCH/SUSPEND/UNLESSM node */
- } ifmatch; /* and SUSPEND/UNLESSM */
-
- struct {
- /* this first element must match u.yes */
- struct regmatch_state *prev_yes_state;
- struct regmatch_state *prev_mark;
- SV* mark_name;
- char *mark_loc;
- } mark;
-
- struct {
- int val;
- } keeper;
+ struct {
+ /* this first element must match u.yes */
+ struct regmatch_state *prev_yes_state;
+ struct regmatch_state *prev_curlyx;
+ struct regmatch_state *prev_eval;
+ REGEXP *prev_rex;
+ CHECKPOINT cp; /* see note above "struct branchlike" */
+ CHECKPOINT lastcp; /* see note above "struct branchlike" */
+ U32 close_paren; /* which close bracket is our end (+1) */
+ regnode *B; /* the node following us */
+ char *prev_recurse_locinput;
+ } eval;
+
+ struct {
+ /* this first element must match u.yes */
+ struct regmatch_state *prev_yes_state;
+ I32 wanted;
+ I32 logical; /* saved copy of 'logical' var */
+ U8 count; /* number of beginning positions */
+ char *start;
+ char *end;
+ regnode *me; /* the IFMATCH/SUSPEND/UNLESSM node */
+ char *prev_match_end;
+ } ifmatch; /* and SUSPEND/UNLESSM */
+
+ struct {
+ /* this first element must match u.yes */
+ struct regmatch_state *prev_yes_state;
+ struct regmatch_state *prev_mark;
+ SV *mark_name;
+ char *mark_loc;
+ } mark;
+
+ struct {
+ int val;
+ } keeper;
/* quantifiers - these members are used for storing state for
- for the regops used to implement quantifiers */
- struct {
- /* this first element must match u.yes */
- struct regmatch_state *prev_yes_state;
- struct regmatch_state *prev_curlyx; /* previous cur_curlyx */
- regnode *me; /* the CURLYX node */
- regnode *B; /* the B node in /A*B/ */
- CHECKPOINT cp; /* remember current savestack index */
- bool minmod;
- int parenfloor;/* how far back to strip paren data */
-
- /* these two are modified by WHILEM */
- int count; /* how many instances of A we've matched */
- char *lastloc;/* where previous A matched (0-len detect) */
- } curlyx;
-
- struct {
- /* this first element must match u.yes */
- struct regmatch_state *prev_yes_state;
- struct regmatch_state *save_curlyx;
- CHECKPOINT cp; /* remember current savestack indexes */
- CHECKPOINT lastcp;
- char *save_lastloc; /* previous curlyx.lastloc */
- I32 cache_offset;
- I32 cache_mask;
- } whilem;
-
- struct {
- /* this first element must match u.yes */
- struct regmatch_state *prev_yes_state;
- int c1, c2; /* case fold search */
- CHECKPOINT cp;
- U32 lastparen;
- U32 lastcloseparen;
- I32 alen; /* length of first-matched A string */
- I32 count;
- bool minmod;
- regnode *A, *B; /* the nodes corresponding to /A*B/ */
- regnode *me; /* the curlym node */
- U8 c1_utf8[UTF8_MAXBYTES+1]; /* */
- U8 c2_utf8[UTF8_MAXBYTES+1];
- } curlym;
-
- struct {
- U32 paren;
- CHECKPOINT cp;
- U32 lastparen;
- U32 lastcloseparen;
- int c1, c2; /* case fold search */
- char *maxpos; /* highest possible point in string to match */
- char *oldloc; /* the previous locinput */
- int count;
- int min, max; /* {m,n} */
- regnode *A, *B; /* the nodes corresponding to /A*B/ */
- U8 c1_utf8[UTF8_MAXBYTES+1]; /* */
- U8 c2_utf8[UTF8_MAXBYTES+1];
- } curly; /* and CURLYN/PLUS/STAR */
+ the regops used to implement quantifiers */
+ struct {
+ /* this first element must match u.yes */
+ struct regmatch_state *prev_yes_state;
+ struct regmatch_state *prev_curlyx; /* previous cur_curlyx */
+ regnode *me; /* the CURLYX node */
+ regnode *B; /* the B node in /A*B/ */
+ CHECKPOINT cp; /* see note above "struct branchlike" */
+ CHECKPOINT lastcp; /* see note above "struct branchlike" */
+ bool minmod;
+ int parenfloor; /* how far back to strip paren data */
+
+ /* these two are modified by WHILEM */
+ int count; /* how many instances of A we've matched */
+ char *lastloc; /* where previous A matched (0-len detect) */
+ } curlyx;
+
+ struct {
+ /* this first element must match u.yes */
+ struct regmatch_state *prev_yes_state;
+ struct regmatch_state *save_curlyx;
+ CHECKPOINT cp; /* see note above "struct branchlike" */
+ CHECKPOINT lastcp; /* see note above "struct branchlike" */
+ char *save_lastloc; /* previous curlyx.lastloc */
+ I32 cache_offset;
+ I32 cache_mask;
+ } whilem;
+ struct {
+ /* this first element must match u.yes */
+ struct regmatch_state *prev_yes_state;
+ U32 lastparen;
+ U32 lastcloseparen;
+ CHECKPOINT cp; /* see note above "struct branchlike" */
+ CHECKPOINT lastcp; /* see note above "struct branchlike" */
+ I32 alen; /* length of first-matched A string */
+ I32 count;
+ bool minmod;
+ regnode *A, *B; /* the nodes corresponding to /A*B/ */
+ regnode *me; /* the curlym node */
+ struct next_matchable_info Binfo;
+ } curlym;
+
+ struct {
+ U32 paren;
+ U32 lastparen;
+ U32 lastcloseparen;
+ CHECKPOINT cp; /* see note above "struct branchlike" */
+ CHECKPOINT lastcp; /* see note above "struct branchlike" */
+ char *maxpos; /* highest possible point in string to match */
+ char *oldloc; /* the previous locinput */
+ int count;
+ int min, max; /* {m,n} */
+ regnode *A, *B; /* the nodes corresponding to /A*B/ */
+ struct next_matchable_info Binfo;
+ } curly; /* and CURLYN/PLUS/STAR */
+
+ struct {
+ CHECKPOINT cp;
+ CHECKPOINT lastcp;
+ } backref; /* REF and friends */
} u;
} regmatch_state;
+
+
/* how many regmatch_state structs to allocate as a single slab.
* We do it in 4K blocks for efficiency. The "3" is 2 for the next/prev
* pointers, plus 1 for any mythical malloc overhead. */
-
+
#define PERL_REGMATCH_SLAB_SLOTS \
((4096 - 3 * sizeof (void*)) / sizeof(regmatch_state))
} regmatch_slab;
+#define REG_FETCH_ABSOLUTE 1
/*
- * Local variables:
- * c-indentation-style: bsd
- * c-basic-offset: 4
- * indent-tabs-mode: nil
- * End:
- *
* ex: set ts=8 sts=4 sw=4 et:
*/
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